Sharp X1
| Hu-BASIC start screen | |
| Manufacturer | Sharp Corporation | 
|---|---|
| Type | Home computer | 
| Release date | 1982 | 
| Introductory price | ¥155,000 | 
| Discontinued | 1987 | 
| Media | Compact Cassette or floppy disk | 
| Operating system | Hu-BASIC, CP/M | 
| CPU | Sharp Z80 A @ 4 MHz | 
| Memory | 64 KB RAM, 4-48KB Video RAM, 6KB ROM | 
| Removable storage | Cassette tape, floppy disc | 
| Display | Text: 40 / 80 x 25 characters; Graphics: 320 x 200 / 640 x 200; 8 colors | 
| Sound | AY-3-8910 or Yamaha YM2149 (YM2151 in later revisions) | 
| Input | Keyboard, joysticks | 
| Controller input | 2 joysticks | 
| Connectivity | Printer port, joystick port, audio out | 
| Power | Built in PSU | 
| Predecessor | Sharp MZ series | 
| Successor | X68000 | 
The X1 (エックスワン, Ekkusuwan), sometimes called the Sharp X1 or CZ-800C, is a series of home computers released by Sharp Corporation from 1982 to 1987. It is based on a Zilog Z80 CPU.
The RGB display monitor for the X1 had a television tuner, and a computer screen could be superimposed on TV. All the TV functions could be controlled from a computer program. The character font was completely programmable (PCG) with 4-bit color, and was effectively used in many games. The entirety of the VRAM memory was mapped on to the I/O area, so it was controlled without bank switching. These features made the X1 very powerful for game software.